Math
Science
English
Geography
History
Business
Riddles
100

What is the sum of the interior angles of a triangle?

180 degrees

100

What type of bond shares electrons between atoms?

Covalent

100

What is the past tense of the verb 'to go'?

Went

100

What is the name of the tallest mountain in the world, located in the Himalayas?

Mount Everest

100

What ancient civilization is known for building the Great Pyramids of Giza?

Ancient Egypt
100

Who is the founder and CEO of Amazon?

Jeff Bezos

100

I'm tall when I'm young and short when I'm old. What am I?

A Candle

200

What is the formula for the area of a circle?

πr2

200

What is the pigment responsible for the green color of plants?

Chloroplast

200

What is the term for a word that replaces a noun, such as 'he,' 'she,' or 'it'?

Pronoun

200

What is the largest country in South America by land area?

Brazil

200

Who was the first President of the United States?

Who is George Washington?

200

What is the economic system in which private individuals own and operate businesses for profit?

Capitalism

200

The person who makes it, sells it. The person who buys it, never uses it. The person who uses it, never knows they're using it. What is it?

A Coffin

300

What is the period of the function y = sin⁡(2x)?

pi

300

What is the name of the organelle responsible for modifying, sorting, and packaging proteins for secretion?

Golgi Apparatus


300

Who is the author of 'To Kill a Mockingbird'?

Harper Lee

300

Which country has the only flag that is not a quadrilateral shape

Nepal

300

What was the name of the conflict between the United States and the Soviet Union from the late 1940s to the early 1990s?

The Cold War

300

What is the term for the amount of money that a business earns from its normal business activities, before deducting taxes and other expenses?

Revenue

300

What has a head, a tail, is brown, and has no legs?

A Penny

400

What is the trigonometric identity for sin⁡2(θ)+cos⁡2(θ)?

1

400

What is the process by which a solid changes directly into a gas without passing through the liquid state?

Sublimation

400

What is the literary device where an author hints at what is to come later in the story?

Foreshadowing

400

What is the name of the deepest trench in the ocean, located in the western Pacific Ocean?

Mariana Trench

400

What event triggered the start of World War I?

The assassination of Archduke Franz Ferdinand

400

What is the term for the cost of borrowing money, typically expressed as a percentage?

Interest

400

I have keys but open no locks. I have space but no room. You can enter, but can't go outside. What am I?

A Keyboard

500

What is the derivative of f(x)=x2+3x+5?

f'(x) = 2x + 3

500

What is the process by which water is lost from a plant's leaves?

Transpiration


500

What is the literary device where a non-human object is given human characteristics?

Personification

500

Which European country's capital is Vienna?

Austria

500

What ancient civilization built the city of Machu Picchu in the Andes Mountains?

Inca Civilization

500

What is the term for the total value of all goods and services produced within a country's borders in a specific time period?

Gross Domestic Product (GDP)

500

I'm light as a feather, but even the world's strongest man couldn't hold me for much longer than a minute. What am I?

A Breath

600

Solve the system of equations:

2x + 3y = 7

4x - 2y = 6

What are the values of x and y?

x = 2

y = 1

600

What is the phenomenon where light waves bend around obstacles and spread out as they pass through an opening?

Diffraction


600

What is the name for a poem of 14 lines with a specific rhyme scheme, such as the Shakespearean or Petrarchan?

Sonnet

600

In which country would you find the ancient city of Petra, famous for its rock-cut architecture and water conduit system?

Jordan

600

What was the name of the military operation that led to the invasion of Normandy by Allied forces during World War II?

D-Day

600

What is the term for a company that is in the early stages of development and is often funded by venture capital?

A Start-up

600

 I fly without wings, I cry without eyes. What am I?

A Cloud